| 摘要 |
To provide a value to be replaced for an output of a manifold pressure sensor in case of failure of the manifold pressure sensor for detecting a manifold pressure for calculating the amount of fuel injection. An abnormality determination unit outputs an abnormal signal when an output voltage of a manifold pressure sensor is not within a predetermined range. A manifold pressure estimating unit calculates an estimated manifold pressure value on the basis of the engine revolution, a throttle opening, and an atmospheric pressure. The manifold pressure estimating unit uses the estimated value as a substitute value of the output of the manifold pressure sensor and continues to control the engine when the manifold pressure sensor has failed.
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